5,000 skulls in memorial to those killed by the Khmer Rouge.

A battle between nature and architecture in the Cambodian jungle.

After the devastating 2011 earthquake, historic Christchurch begins to recover, starting with the pop-up Re:START mall.

The ruins of New Zealand's largest classical-style church.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

A New Zealand couple's shell-adorned home living room, now on display at the Canterbury Museum.

New Zealand's epic shrine to all things puzzling.

This strange geological landscape erupts with sudden bursts of water.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

The glacier tucked within a New Zealand rainforest.

A glacier pocked with ice caves and surrounded by rainforests.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

Tubing through a cave lit with glowworms is a magical underground experience.

A pocket of jungle amidst urban expansion in Panama.

Five miles of underground river link lake to ocean.

Hundreds of wooden coffins dangle from cliffs and caves in the Philippines.

Peace Park and the Atomic Bomb Dome.

Once a black market electronics marketplace, now an otaku shopper's paradise.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

Not quite the menace it once was, this monster still has some chops.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

A beautiful bamboo trail tucked in this famous Japanese Shrine.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.

This 700-year-old street food market features baby octopus and soy donuts.